Match List-I with Match List-II List-I (Metal) List-II (Application) (A) Cs (I) High temperature thermometer (B) Ga (II) Water repellent sprays (C) B (III) Photoelectric cells (D) Si (V) Bullet proof vest Choose the most appropriate answer from the options given below

Question

Match List-I with Match List-II List-I (Metal) List-II (Application) (A) Cs (I) High temperature thermometer (B) Ga (II) Water repellent sprays (C) B (III) Photoelectric cells (D) Si (V) Bullet proof vest Choose the most appropriate answer from the options given below, A - III , B - I , C - IV , D - II, A - II , B - III , C - IV , D - I, A - IV , B - III , C - II , D - I, A - I , B - IV , C - II , D - II

MARKS App · Accepted Answer

A - III , B - I , C - IV , D - II Caesium is used in devising photoelectric cells. Boron fibres are used in making bullet-proof vest. Silicones being surrounded by non-polar alkyl groups are water repelling in nature. Gallium is less toxic and has a very high boiling point, so it is used in high temperature thermometers. Column I (Element) Column II (Uses) i Cs c Photoelectric cell ii Ga a High temperature thermometer iii B d Bullet-proof vest iv Si b Water repellent sprays

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	List-I (Metal)		List-II (Application)
(A)	$Cs$	(I)	High temperature thermometer
(B)	$Ga$	(II)	Water repellent sprays
(C)	$B$	(III)	Photoelectric cells
(D)	$Si$	(V)	Bullet proof vest

	Column I (Element)		Column II (Uses)
i	$Cs$	c	Photoelectric cell
ii	$Ga$	a	High temperature thermometer
iii	$B$	d	Bullet-proof vest
iv	$Si$	b	Water repellent sprays